Infineon Technologies ICE2PCS05XKLA1

Overview

ICE2PCS05XKLA1 from Infineon Technologies is an 8-pin standalone Continuous Conduction Mode (CCM) Power Factor Correction (PFC) controller IC for boost-topology AC-DC front-ends. It delivers average current control, programmable switching frequency (20–250 kHz), 3 V ±2% trimmed internal reference, 95% max duty cycle at 125 kHz, and operates across 85–265 VAC input. Used in industrial SMPS, LED drivers, and Class D-compliant server power supplies.

For engineers reviewing the ICE2PCS05XKLA1 datasheet, ICE2PCS05XKLA1 pinout, ICE2PCS05XKLA1 application, or ICE2PCS05XKLA1 equivalent, key selection criteria include its external voltage/current loop compensation flexibility, fast dynamic response during load jumps, soft-start with controlled peak startup current, and integrated protections including OVP, SOC, PCL, and open-loop detection.

Technical Context

The ICE2PCS05XKLA1 implements a cascaded dual-loop architecture: an inner average current loop using ISENSE feedback and ICOMP compensation, and an outer voltage loop with VSENSE sensing and VCOMP compensation. Its nonlinear gain block shapes the current reference to track sinusoidal line voltage, enabling high PF (>0.99) in CCM.

It features a variable oscillator set via FREQ pin resistor, gate driver with 1.5 A source / 2.0 A sink capability, VCC UVLO (11.8 V turn-on, 11 V shutdown), and dedicated protection blocks - including soft overcurrent (SOC) acting on PWM duty via nonlinear gain, not hard shutdown, and output overvoltage protection triggered at 108% rated VOUT.

Key Specifications

Pinout & Package

ICE2PCS05XKLA1 is packaged in PG-DIP-8 (dual in-line package), an industry-standard through-hole 8-pin package with 0.3 inch body width and 0.1 inch lead pitch, suitable for high-reliability industrial PCB assembly and thermal management via copper pour.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar CCM PFC controller applications.

Compared with ICE2PCS05XKLA1, ICE2PCS02XKLA1 sacrifices frequency flexibility and soft overcurrent protection for simplicity and lower unit cost, while UCC28070DR shifts to digital-interleaved architecture-offering superior ripple cancellation and programmability but demanding more complex layout and firmware support.

Availability

ICE2PCS05XKLA1 is available at Aetrix Electronics and suitable for industrial SMPS, LED driver front-ends, server PSUs, and medical AC-DC adapters requiring stable component supply, long-term lifecycle assurance, and full traceability.

Supply support for ICE2PCS05XKLA1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Infineon Technologies AG is a German semiconductor leader specializing in power management, automotive, and industrial control ICs, with global manufacturing and quality certification to ISO 9001 and IATF 16949.

The ICE2PCS series targets cost-effective, high-reliability active PFC solutions for universal-input AC-DC converters-emphasizing ease of design, robust protection, and compliance with international harmonic standards.

FAQ

What is the recommended external sense resistor value for ISENSE on ICE2PCS05XKLA1?

The ISENSE pin accepts a maximum negative voltage of –0.75 V before activating Soft Overcurrent Control. For a typical 10 A peak inductor current and 100 mΩ sense resistor, the voltage drop is –1.0 V-exceeding the limit. A 50 mΩ resistor yields –0.5 V at 10 A, staying within safe range while providing sufficient signal-to-noise ratio for accurate current regulation.

Does ICE2PCS05XKLA1 support discontinuous conduction mode (DCM) operation?

No-ICE2PCS05XKLA1 is specifically designed for continuous conduction mode (CCM) operation in boost topology. Under very light loads, the system may naturally transition into DCM due to inductor current decay, but the controller does not regulate or optimize for DCM; its compensation, protection, and reference structures assume CCM behavior.

How is the soft-start duration determined for ICE2PCS05XKLA1?

Soft-start duration is set by the RC time constant at the VCOMP pin: a 100 nF capacitor and 100 kΩ resistor yield ~10 ms ramp time. The internal OTA1 sources up to 30 mA into this network until VOUT reaches 95% of target, after which window-detect logic disables ramping and transfers control to the normal voltage loop.

Can ICE2PCS05XKLA1 be used with a bootstrap gate drive instead of an auxiliary supply?

No-VCC must be supplied by a dedicated auxiliary winding or offline regulator delivering 11–26 V DC. The IC lacks bootstrap diode integration or high-side floating supply capability. Using bootstrap would violate VCC UVLO thresholds and disable critical protections like OVP and open-loop detection that depend on stable VCC monitoring.